20675875 has 24 divisors (see below), whose sum is σ = 28383264. Its totient is φ = 15026000.

The previous prime is 20675813. The next prime is 20675917. The reversal of 20675875 is 57857602.

It is not a de Polignac number, because 20675875 - 2⁷ = 20675747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14442 + ... + 15808.

It is an arithmetic number, because the mean of its divisors is an integer number (1182636).

Almost surely, 2^20675875 is an apocalyptic number.

20675875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20675875 is a deficient number, since it is larger than the sum of its proper divisors (7707389).

20675875 is a wasteful number, since it uses less digits than its factorization.

20675875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 20675875 is about 4547.0732345103. The cubic root of 20675875 is about 274.4656289669.

The spelling of 20675875 in words is "twenty million, six hundred seventy-five thousand, eight hundred seventy-five".